The ROC of sequence in the Z.T. of sequence x = an ∪ is

1.

The ROC of sequence in the Z.T. of sequence x[n] = aⁿ ∪ [n] is

[A].	z > a
[B].	z < a
[C].	\|z\| > a
[D].	\|z\| < a

Answer: Option C

Explanation:

The simplest method to find the ROC. Put denominator to greater than zero.

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